What happens during systole in the heart?

During systole, the heart undergoes a crucial phase where it contracts and pumps blood out of the chambers. Specifically, this phase involves the contraction of the ventricles, which are the lower chambers of the heart. As the ventricles contract, they generate a significant amount of pressure that forces blood out of the heart and into the arteries, leading to systemic circulation. This action is essential for delivering oxygenated blood to the body's tissues and organs.

Furthermore, systole is contrasted with diastole, during which the heart relaxes and fills with blood. Understanding this cycle of contraction and relaxation is fundamental to grasping how the cardiovascular system functions effectively. The process also ensures that the heart maintains proper blood flow throughout the body, reflecting the dynamic and rhythmic nature of the heart's operation.